RecyclerView调用notifyItemChanged闪烁问题相信很多人都遇到过。
那是因为recyclerView默认设置的动画DefaultItemAnimator造成的，
DefaultItemAnimator继承自SimpleItemAnimator，里面有个方法是

/**
     * Sets whether this ItemAnimator supports animations of item change events.
     * If you set this property to false, actions on the data set which change the
     * contents of items will not be animated. What those animations do is left
     * up to the discretion of the ItemAnimator subclass, in its
     * {@link #animateChange(ViewHolder, ViewHolder, int, int, int, int)} implementation.
     * The value of this property is true by default.
     *
     * @param supportsChangeAnimations true if change animations are supported by
     *                                 this ItemAnimator, false otherwise. If the property is false,
     *                                 the ItemAnimator
     *                                 will not receive a call to
     *                                 {@link #animateChange(ViewHolder, ViewHolder, int, int, int,
     *                                 int)} when changes occur.
     * @see Adapter#notifyItemChanged(int)
     * @see Adapter#notifyItemRangeChanged(int, int)
     */
    public void setSupportsChangeAnimations(boolean supportsChangeAnimations) {
        mSupportsChangeAnimations = supportsChangeAnimations;
    }

只要设置为false，就可以不显示动画了，也就解决了闪烁问题。
代码其实就一句话:

((SimpleItemAnimator)recyclerView.getItemAnimator()).setSupportsChangeAnimations(false);